Introduction. The aim of this research was to investigate the presence and level of relationship of burnout dimensions with perceived general self-efficacy in relation to the length of service of nurses. Participants were nurse employees of a Cantonal Hospital „Dr.Irfan Ljubijankić” Bihać (N=102) who work directly with patients. Materials and Methods. Maslach burnout inventory MBI-HSS. was used to test burnout in the workplace. Generel self-efficacy was measured by a short version of the original general self-efficacy scale by Schwarzer et al. Conclusion. Research results indicate low level of burnout in the workplace with a tendency towards moderate. More specifically, moderate emotional exhaustion, low depersonalization and high personal accomplishment. Perecived self efficacy is associated with depersonalisation (rs= -0.26, p<0.05) and personal accopmlishment (rs =0.41, p<0.05), whilst intention to change profession is affected by perceived self efficacy, emotional exhaustion and personal accomplishment.

In this paper, for the case of gas oscillator two characteristic thermodynamic change of state, and for them defined functional dependence of the force from moving the piston in a nonlinear form were considered. In this paper small oscillations are observed and the linearization is performed by neglecting nonlinear term as the small size at isothermal change and with development obtained function in Taylor series for adiabatic change. Based on the analysis of analog oscillator of mechanical system, or the equivalent scheme of problems, characteristics oscillation parameters and the motion law of the observed thermodynamic system are defined. With this procedure greatly simplifying for problem solution was achieved with respect to classical procedure. At the end of the paper, an analysis of the obtained results were done and appropriate electrical analogy was setting. This is used for the presentation of the problem through appropriate electric circuits and analogy mathematical relations, which involve voltage and electric currents as electric sizes. Also, it was shown that the electrical analogy can be used for all mechanical and thermodynamic processes which describes by homogeneous second-order differential equations which are the most common in technical practice.

Starting from the expression for the thrust in the field of full utilization cross section scrapings and tool life, an expression is derived for the maximum required thrust of universal machine. Then, using a working diagram the analysis of the main features of the simultaneous utilization of machines was performed and determined the optimal area of its utilization for given optimal diameter of treatment. Based on this, the well-known machine using its structural details and the corresponding function workability, derived relations to determine the optimal coefficient slenderness of scrapings suitable for practical use. In this case we think that is known critical material for work piece. Considering the critical and authoritative material of the work piece, based on the expression for the cutting speed was determined by the characteristic constant workability as the basis for establishing optimum tool material which is adequate for optimum regime. Both obtained relation can be considered as general model that can be applied directly to solving setting problems. Also, given the possibilities of practical application of the presented relations, especially in the case of other typical kinds of treatment. Finally, the model is verified on a one calculation example from practice for a Specific machine tool, where certain important characteristics of the optimal treatment are defined.

In this paper for complex processes in the field of production mechanical engineering, that describes with the product of step and exponential functions, unknown parameters are calculated. The starting complex function is reduced by suitable method to linear form and then using Taylor's formula developed in series surrounding center point of the experiment. Mathematical model obtained without factors interaction was compared with a similar regression functions. After some mathematical transformations this model allows to determination unknown parameters in the starting function. To simplify the experimental determination of the coefficients of regression and to simplify the analysis, linear model of first order with interactions in coded form was used. Transformation to natural coordinates is performed by using adequate equations. Verification of the suggested method was performed using characteristic experiment in the field of metal deformation. For well-known law of resistance of metals at hot plastic deformation, as a function of influencing factors, all unknown parameters were determined in two ways: by comparing corresponding linear functions and using available derived models. The regression function of prior thermo mechanical process technology was determined experimentally using orthogonal multiple factor first order plan. Also, required statistical analysis and testing of this model were performed. With graphical interpretation of obtained results in logarithmic coordinates, well fittings models and experimental results were shown. Finally, some possibilities for practical application of the proposed methods and models in the field of production engineering, especially in the case of complex processes, were suggested. This method, compared to other methods used for solving setting problem, is faster, more efficient and more reliable.